Originally Posted by
Indelibility
I wonder if the 5.5L from the R230 will fit...

You betcha, but that sucker is expensive. That'll be my next swap when I have the cash saved up, not only for the motor, but that sucker is enough power to destroy a lot of drivetrain so everything has to be beefed up.
And not to be nit-picky it's really a 5.4